I've got to say, maybe I'm still in the giddy stage of my recent Recertified Macbook Air Rev. A purchase, but I am excstatic with my purchase. I've gone through alot of computers in the past year and I have a feeling this one is going to stick. Just some quick stuff, for alot of people I'm sure the 200.00 bucks more for the 9400m/SATA is probably money well spent, but I'm actually dropping quite a bit (in the middle of a two stage purchase iMac 24'' and MBA) so I decided to scale back the Air. The biggest thing for me is, performance is awesome. My last mobile machine was a Latitude XT tablet (1.06ghz Core 2 Solo/3GB of RAM) so I may not be the best gauge here but I expected to be disappointed by a glorified netbook and the Air is nothing like that at all. Its dead silent and fairly quick. My only complaints are it seems to wobble on my desk, though that could very well be my desk, and the fact that for similar money you could get a uMBP. But not the general argument that it would be faster, but because if you're truly mobile you'd prefer the 7 hours of battery life on the uMBP versus the MBA. I get annoyed when people make the price comparison for performance, because most mobile users will sacrifice speed for size, but the battery life is hard to ignore. I don't know if the latest revisions are superior but I get a little over 4 hours, and even if 7 from Apple is a lie, 5 1/2-6 would be awesome. In summation if any prospectve buyers are wondering if they should take the plunge, its well worth it. Alot of this forum is breaking down to people's complaints with the device so I wanted to just shout out that I haven't had single problem with heat or shutdowns. I also just wanted to say that buying refurbished is totally the way to go, I will absolutely never pay for a new Apple computer again when the refurbished is that awesome a deal.